<template>
  <div>
    <div class="search">
      <input class="search-input" type="search"  v-model="keyword" placeholder="请输入城市名或拼音">
    </div>
    <div
      class="search-content"
      ref="search"
      v-show="keyword">
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  data(){
    return{
      keyword:'',
      list:[],
      timer:null
    }
  },
props:{
  cities:Object
},
methods:{
  handleCityClick(city){
      this.$store.commit('changeCity',city)
      this.$router.push('/')
      this.keyword=''
    }
},
computed: {
    hasNoData () {
      return !this.list.length
    }
  },
watch: {
  keyword () {
    if (this.timer) {
      clearTimeout(this.timer)
    }
    if (!this.keyword) {
      this.list = []
      return
     }
    this.timer = setTimeout(() => {
      const result = []
      for (let i in this.cities) {
        this.cities[i].forEach((value) => {
          if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
            result.push(value)
          }
        })
       }
      this.list = result
    }, 100)
  }
},
mounted () {
    this.scroll = new Bscroll(this.$refs.search,{
      click: true,
      observeDOM:true
    })
},
}
</script>

<style lang="stylus" scoped>
  @import '~@/assets/style/varibles.styl'
  .search
    touch-action: none
    height: .72rem
    padding: 0 .1rem
    background: $bgColor
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .1rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
  .search-content
    z-index: 1
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>
